There are 3 main types of masks:
Nasal Face Mask: These cover both your nose and your mouth. We recommend this to anyone who breathes with their mouth open or anyone who has frequent problems with allergies and nasal congestion.
Nasal Pillow Mask: These only cover your nose. Many CPAP users prefer this style because they are not as heavy as a full-face mask, yet they still retain stability.
Full Face Mask: These fit in your nostrils and are the smallest and most minimal of the 3 mask styles. We recommend this style to CPAP users experiencing skin irritation since they have the least amount of contact with your face.